Alexa will not play my Spotify playlists

[ClassicalGas]

Plan

Premium

Country

US

Device

Amazon Echo Dot and Tap

My Question or Issue

 All of a sudden Amazon Alexa voice commands will not recognize any of my Spotify playlists. This has never been a problem before. I tried delinking and relinking my Spotify account to Alexa but this did not fix the issue. This is very frustrating -- my entire reason for subscribing to Spotify Premium was to use it with Alexa devices. Spotify is useless to me without this capability. Nothing I found in the Community Help Forums seems to provide a solution.